John haag



(No Model.) v

. v J.HAAG.

MINER'S TOOL FOR BREAKING DOWN GOAL.

Patented Aug. 9, 1887.

N. PETERS. Fbolo-Ulhognpher. Waxhington, D. C.

UNITED STATES PATENT OFF CE.

.JOHN HAAG, OF TROUTV ILLE, PENNSYLVANIA.

MINERS TOOL FOR BREAKING DOWN COAL.'

EPECIFICATION forming part of Letters Patent No. 367,807, dated August 9, 1887.

Application filed March 8,1887.

To all whom, it may concern:

Be it known that I, JOHN HAAG, a citizen of the United States, residing at Troutville, in the county of Glearfield and State of Pennsylvania, have invented a new and useful Improvement in Miners Tools for Breaking Down Goal, of which the following is a specification.

The invention is a device designed to be used in breaking down coal after the same has been drilled and undermined in the usual. manner for blasting, the object being to avoid the use of gunpowder or other explosive and all the deleterious accompaniments of the same; and it consists in the construction and novel arrangement of parts, hereinafter described, pointed out in the claims, and illustrated in the accompanying drawings, in "which- Figure 1 represents a perspective view of the device or tool with the wedge portion turned sidewise on its pivot. Fig. 2 represents the device in position to be used to break down the coal that has been drilled and u ndermined in the usual manner.

Referring to the accompanying drawings, A represents the shaft of the device, about four feet long and usually rectangular in crosssection.

a is ahead secured upon the outer end of the shaft A by means of a pin thereon entering a recess in the head, which is intended to receive the blows of the hammer when operating the device.

B is an end section, pivoted at b between the sides of the bifurcated inner end of the shaft A. The said section is curved and tapers toward its point I), which is chisel-edged laterally, as shown.

O is the wedge-section, pivoted at 0 upon the lower surface of the shaft A in a cutaway portion, a, of the same. The said section inclines inward toward the shaft from its pivotal point, and has its inner end, 0, beveled and slightly inclined transversely to engage under the corresponding inclined and beveled shoulder, a of the shaft A. Thus the wed ge-section looks into said shoulder and can be turned to one side, thereof only, and makes a continuous surface with the shaft.

Serial No. 230,12

(No model.)

. The end section curves toward the side of the shaft on which the wedge-sectionis pivoted, as shown. 7

x The manner of using the device is as follows: The coal being drilled and undermined, the tool or device is inserted into the drillhole up to the point of the wedge-section, with the point of the end section at the end of the drill-hole, which is-gaged to proper depth. thereofr It is then in the position shown in Fig. 2, the point of the end section turned slightly downward and the wedge-sec,- tion on the under surface of the staff. The miner then drives it inward with a hammer or the like, and as it enters theend section, guided byit-s chisel edged curved point, turns on its pivot and takes a downward course, and the wedge-section forces downward the coal below the mouth of the drill-opening, so that the coal above the undermining is soon broken away.

The following are some of the advantages derived from the use of the device: The coal can be broken down and carried away in less time than by the use of gunpowder; no time is lost in waiting for smoke to clear away; large'amounts of powder can be saved; the miner is preserved from the dangers of explosion and of breathing unwholesome gases generated by the explosion, and there is no danger of shattering the roof of the coal-level and bringing it down on the heads of the miners.

The entire device is preferably made of steel. 7

Having described my invention, I c1aim- 1. The herein described device for breaking down drilled and undermined coal, which device consists of the staff or shaft of suitable length, the curved and tapered end section pivoted to one end of the staff, and the wedge-section pivoted upon one side of the staff near the other end, substantiallyas specified. i 2. The herein-described coal-mining tool or device, composed of the staff provided with the head a, and inwardly-beveled inclined shoulder cf, the curved end section havingits concavity on the same side of the staff as said shoulder, pivoted within the bifurcated end of the staff, tapering thence to its point and provided with a lateral ehisel-edge at said point, and the wedge portion pivoted on the stall in the depressed or cut-away portion a,

5 and having its inner end beveled and inclined to engage with the shoulder (1?, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affi xed my signntn re in presence of two witnesses.

JOHN IIAAG.

\Vitncsses:

SAML. G. KUNTZ, V. O. liiN'rz. 

